Oops, it doesn't look like 'autoresponder appreciation day' is a national day..

Other days

cursing

Cursing Day

bubble bath

Bubble Bath Day

self appreciation

Self Appreciation Day

offer

Offer Day

pampering

Pampering Day

comfy

Comfy Day

bounce

Bounce Day

Emoji Day

my little pony

My Little Pony Day

frozen yogurt

Frozen Yogurt Day